Question

Why would scientists use a control sample that is known to be from a

specific species in an eDNA surveillance for that species?
A. So they can have a negative control against samples
B. So they can cut sample DNA into fragments
C. So they can amplify the DNA in small samples
D. So they can identify samples that contain the target DNA

Answer 1

Scientists use a control sample from a known species to confirm the identity of specimens by comparing nucleotide sequences, which helps in identifying samples containing the target DNA.

Step-by-step explanation:

Scientists would use a control sample known to be from a specific species in an eDNA surveillance for that species to identify samples that contain the target DNA. This comparison acts as a reference to confirm the identity of specimens by determining the sequence of nucleotides in DNA. Using methods such as PCR, scientists can amplify the target DNA and match it against the known control sample to identify the presence of the species.

Answer 2

Here is the answer...

Step-by-step explanation:

Option A is used to control sample that is known to be form.